Locomotive-cab ventilator



P 1929. E. J. WILHELM LOCOMOTIVE CAB VENTILATOR Filed' Aug 12 1926 EDWIMJJWLHELM ATTORNEYS Patented Apr. 9, 1929.

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LOCOMOTIVE-CAB VENTILATOR.

Application filed August 12 This invention relates to new and useful improvements in locomotive cabs and particularly to the ventilating means therefor, and the object of the invention is to provide a simpl and e'liicient ve tiiating system which may be controlled by the locomotive operators from their respective working positions in the cab. 7

Another object is to provide a locomotive cab Ventilating system which may be held at any desired degree of opening between its maxin' um open and closed positions.

In my invention 1 provide ventilators hingcdly attached along one edge to the cab root of a locomotive. The ventilators may be arranged in alignment or they may be mounted in staggered form. Secured to the under side of each ventilator is an angle having a slot formed in its vertical leg adapted to be engaged by a projection attached to one end of a bell crank lever pivotally mounted on a pin secured to the fixed cab structure. The other ends of the bell crank levers may be connected together by means of rods so that the ventilators may work in unison and be controlled by the locomotive operators from their driving positions.

In the drawings which illustrate my invention in its simplest forms;

Figure 1 is a part sectional side elevation of a locomotive cab showing two ventilators mounted in alignment in the longitudinal direction of the locomotive.

Figure 2 is a part sectional side elevation of a locomotive cab equipped with a modified arrangement of ventilators.

Figure 3 is a sectional end elevation of part of the cab shown in Figure 2 taken on the line 3-3.

Figure 4 is a side elevation, of one of the ventilator operating levers and its connection to the ventilator.

Figure 5 is an end elevation of the device shown 1n Figure 4;.

, 1926. Serial No. 128,830.

the ventilator covers 18, the outer edges 19 of which extend beyond the upper edges of the angle edges and are turned downwardly to provide protection against the entry of rain or thelike into the cab. It will be seen that the ventilators open in such a manner that they slope towards the :t'ront of the locomotive, shown in dotted lines in Figure 1. Se cured to the underside of each of the ventilators by any suitable means, is the angle iron 20 shown in detail in Figures 4 and 5, each angle being provided with a slot 21 closed at both ends, end 22 acting as a stop to limit the opening movement of the ventilators. Pivotally attached to fixed portions of the cab by means of the pins 23 are the bell crank lovers 2%, the arms of each of which are positioned substantially at an angle of 120 to one another. The arms 25 have formed integral therewith, projections 26 adapted to slide in the slots 21 on movement of the levers 2&, said projections being preferably positioned at the end remote from the pivot. The arms 27 are provided at their ends with a bifurcated portion 28 so that they may be connected together by means of the connecting rods 29 and to the operating chain 30 which passes over a rotatably mounted pulley 31, and is provided with a handle 32 located in proximity to the locomotive drivers working position. In Figures 2 and 3 a slight V modification is shown in the arrangement of the ventilators, one being positioned on each side 01"? the longitudinal centre of the cab while the third ventilator is positioned at the centre of the cab. The parts similar to those shown in Figure 1 are designated with like numerals. In Figure 3 it will be seen that two of the ventilators are connected together by means of the rod 29 and are operated by a common chain 30 and handle 82, while the other ventilator is operated by a chain and handle of a similar type but positioned on the opposite side of the cab from the handle 32 so that the pair of connected ventilators may be operated by the locomotive driver while the other may be operated by his assistant or fireman. Fixed hooks 3% may be provided to engage with the chain to hold the ventilators at any desired degree of opening.

Modifications may be made to the general construction of the device without departing from the spiritof the invention.

In operation the ventilators are opened by pulling on the handle which through the what I clain1'is:-

'chain swings the levers about their pivots and causes the projections to exert'anopening or raising action onthe ventilators.

It will be seen that the device is Very simple in construction and operation, and provides.

a means for thoroughly ventilatinga locomotive cab from the working stance of the operators. The ventilators are held open-by. no means of the hooks which may pass through or engage with the links of the chain.

Having thus described my invention,

bounded by upwardly projecting marginal flanges, a cover hinged to the'forward flange than said opening so that, in closed position,

the edges of' the cover extend beyond the flanges of the-opening, said edges being di- 7 rected downwardly to prevent the entrance of rain or the like between the cover and the upper edges of said flanges, an anglestrip disposed to'eXtend' atright angles tothe hinge of the cover and positioned close to one of .the side flanges of-the ventilating opening, said angle strip presenting a horizontal flange secured "to the lower surface of the cover and, a' vertical flange having a longitudinally "extending. slot formed therein, a bell crank lever pivoted to the last mentioned flange of theventilating opening with one arm of the lever extending downwardly only ashort distance below the ceiling surface or" the cab, the other arm ofthe lever being formed with an integrallaterally projecting terminal operating in the slotof the angle strip and means for imparting swinging oftheopenmg and made somewhat larger movement to the downwardly extending arm of said lever."

In witness whereof, l have hereunto set my hand.

"EDWIN .r WILHELM. 

